Baby Sensory issues with mouth ?

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My daughters pediatrician placed a referral to Occupational Therapy for a feeding evaluation and feeding therapy because my 9.5 month old won’t eat solids at all, not even table foods. And she hates putting things in her mouth including teething toys. We’ve tried everything. Has anyone been through this? Are sensory issues a disability? I’m not trying to be insensitive, I’m genuinely worried and curious. Thank you